Cutting force impact to tool life of CT5015 in high speed machining by applying negative rake angles
Cermets become increasingly popular cutting insert in recent years. They are generally good when accuracy and finish are criteria for the operation. Several improvements have been made to increase their performance in machining process such as higher resistance to thermal deformation and lower co...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd., Switzerland
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/35545/1/28.pdf http://irep.iium.edu.my/35545/ http://www.scientific.net |
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| Summary: | Cermets become increasingly popular cutting insert in recent years. They are generally
good when accuracy and finish are criteria for the operation. Several improvements have been made
to increase their performance in machining process such as higher resistance to thermal deformation
and lower conductivity than carbide tools that wear rapidly. This study is to investigate cutting force
and tool wear under different rake angles in high speed machining process. Experiments were carried
out by using cermet insert (CT5015). Different rake angles have been applied in the experiments
which are 0o, -3o. -6o, -9o and -12o respectively with cutting speed 1000 m/minute and feed rate 800
mm/minute. For every single pass of cutting, cutting force, wear rate and cutting temperature were
measured respectively by surface roughness tester, dynamometer, Scanning Electron Microscope
(SEM) and infrared thermometer. The experimental results showed that the more negative angles the
higher cutting force produced. Simultaneously, cutting temperature increases following the
incremental of cutting force. It caused wear occurred faster and lead to reduce the life of cermet
inserts. |
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